Modes

Modes of Gb major

ModeRootNotesTonic chord
1IonianGbGb Ab Bb Cb Db Eb FGbmaj7Open page
2DorianAbAb Bb Cb Db Eb F GbAbm7Open page
3PhrygianBbBb Cb Db Eb F Gb AbBbm7Open page
4LydianCbCb Db Eb F Gb Ab BbCbmaj7
5MixolydianDbDb Eb F Gb Ab Bb CbDb7Open page
6AeolianEbEb F Gb Ab Bb Cb DbEbm7Open page
7LocrianFF Gb Ab Bb Cb Db EbFm7b5Open page

Gb Ionian

Fretboard

FGbAbBbCbDbEbBbCbDbEbFGbAbEbFGbAbBbCbDbAbBbCbDbEbFGbCbDbEbFGbAbBbCbFGbAbBbCbDbEb

Gb Ab Bb Cb Db Eb F

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Computed from music theorychordfolk.com

Method

How this is computed

How notes are spelled

Every scale and chord is stored as a degree formula, such as 1 b3 4 5 b7, and not as a list of steps. Steps cannot spell notes correctly: F# major has to contain E#, not F.

To spell a note, Chordfolk takes the letter that is the right number of steps above the root's letter, then adds the sharp or flat that makes the pitch come out right. The notes inside a scale are always spelled this way, so D major has F# and F major has Bb.

If a note would need more than a double sharp or double flat, Chordfolk does not respell it quietly. It tells you, and suggests an enharmonic root to try instead.

How modes are found

A mode is a parent scale started from a different degree. D dorian uses the same notes as C major, but D is home.

Chordfolk derives every mode by rotation. It starts the parent's pattern at the mode's degree, measures each note from the new root, writes the result as a degree formula, and spells it with the normal rules. No mode formula is typed by hand.

A parent is named by a standard key, so Db locrian is mode 7 of D major, and C# lydian is mode 4 of Ab major.